Process and product of preparing stearate of zinc for use in relieving prickly heat,etc.



Patented Aug, Z, 1923.

ROSE C. FARRELL AND CHARLES E. COOGAN', OF NEW YORK, N. Y., ASSIGNOBS T IEBEN E. OLCOTT, 015 NEW YORK, N. Y.

PROCESSAND PRODUCT OFAPBEPARING STEARATE OF ZINC FOR USE IN RELIE'VING' PRICKLY HEAT, ETC.

No Drawing.

To all whom it may concern:

Be it known that we, Rosn C. FARRELL and CHARLES E. COOGAN, citizens of the United States, residing at New York, in the 6 county of New York and State of New York, have invented a new Process and Product of Preparin Stearate of Zinc for Use in Relieving rickly .Heat, etc., of which the following is a specification.

Our invention comprises a processof preparin stearate of zinc powder for use in relieving prickly heat, chafed, itching or sensitive, skin, excessive perspiration, etc., and the invention also comprises an improved zinc stearate powder made in accordance with the process of this invention.

In carrying out our invention, we heat talc and parafiin wax together in a water bath to a temperature above the melting point of the wax used. The wax thus forms a film over the particles of talc.

After heatin the parafiin wax and talc until the para 11 wax becomes melted and stirring the mass thoroughly together in 2 order to cause the particles of tale to be coated with the wax, the same is allowed to cool and is then mixed with an, equal volume of stearate' of zinc. This mixture which has been so formed is then put up in 31} the usual way for distribution and use. 4

The zinc stearate adheres in a uniform film to the waxed talc, improving the sifting, spreading and coating properties in the zinc stearate in a useful and economical 35 way. Our process lessens the fatty cohesion of zinc stearate so that it sifts, spreads and Application filed'August 8, 1922. Serial No. 580,543.

coats more freely and uniformly than in its natural state, while preserving all of its natural curative and moisture-proof propertles.

The proportion of wax to talc used is preferably three to five per cent of the mixture by weight, although other proportions may be employed.

By employing our process, thetalc particles are first given a coating or film of parafiin wax and are subsequently coated or filmed with stearate of zinc'. I

What we claim is:

1. The process which consists in heating talc and parafiin wax to melt the wax, cooling the mass and adding zinc steara-te to the same.

2. The process which consists in coating tale with a film of parafiin wax and subsequently adding zinc stearate to the same.

3. The process which consists in coating talc, in finely divided form, with a film of paraifin wax and subsequently mixing the same with stearate of zinc.

4. The process which consists in coating talc particles with paraffin wax and then coating the'waxed talc particles with stearate of zinc.

5. A substance composed of particles of tale with an envelope of paraflin wax, and zinc stearate.

6. A substance composed of talc particles enveloped in successive films of paraffin wax and zinc stearate.

ROSE C. FARRELL. CHARLES E. COOGAN. 

